Graphene-based organosilicon porous nanometer material and preparation method thereof

Abstract

The invention relates to a graphene-based organosilicon porous nanometer material and a preparation method thereof. The graphene-based organosilicon porous nanometer material is composed of a component A and a component B according to a weight ratio of (1-2): 1, wherein the component A comprises the following raw materials in parts by weight: 10 to 50 parts of methyl vinyl polysiloxane, 5 to 20 parts of methyl hydrogen-containing polysiloxane, 0.1 to 5 parts of a chain extender, 0.1 to 10 parts of a separant, 5 to 30 parts of graphene, 0.05 to 2 parts of a structured control agent, 0.05 to 2 parts of a silane coupling agent, 0.01 to 1 part of a silicone-based inhibitor and 0.5-5 parts of a foaming agent; and the component B comprises the following raw materials in parts by weight: 10 to 20parts of methyl vinyl polysiloxane, 10 to 30 parts of methyl vinyl MQ silicon resin, 0.1 to 10 parts of a separant, 5 to 30 parts of graphene, 0.05 to 2 parts of a structured control agent, 0.01 to 1part of a catalyst and 0.5-5 parts of an activator. The graphene-based organosilicon porous nanometer material is light in weight, viscoelastic, fine and uniform in cross section foam pores, firm inbonding a base material due to interaction of a graphene nanometer film and an organosilicon material base body, excellent in compression resistance, impact resistance and thermal stability, and is applicable to light-weight application scenes like sealed shock absorption, microwave absorption, electromagnetic shielding and heat dissipation protection.

Description

technical field [0001] The invention belongs to the technical field of organosilicon materials, and relates to a graphene-based organosilicon porous nanomaterial and a preparation method. Background technique [0002] Graphene is a two-dimensional planar nano-frontier material with excellent performance. It was first discovered by Konstantin Novoserov and Andre Geim and made by microcomputer exfoliation. Two-dimensional graphene is the basic material of carbonaceous materials. As a unit, it can be curled into zero-dimensional fullerenes and one-dimensional carbon nanotubes, or it can be stacked into three-dimensional graphite. Graphene contains the following characteristics: First, the thinnest material found so far, the thickness of single-layer graphene is only 0.335nm, which is equivalent to the diameter of a carbon atom; second, the specific surface area is huge, and the specific surface area of ​​graphene reaches 2600m 2 More than / g, it is an energy storage material w...

AI Technical Summary

Problems solved by technology

However, the depth and breadth of the application of graphene / organosilicon in people's daily life has not yet reached the expectations of researchers in this field. The main reasons are as follows: 1. After it is developed, it needs a long period of reliability testing before it can be applied on a large scale; 2. There are still certain technical problems in the graphene / organosilicon composite material that will take a long time to overcome, such as graphene self-generated and easy to agglomerate, graphene Poor compatibility with silicone and the structure and intrinsic defects of graphene

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